%0 Journal Article %A E. L. Gusev %T On a priori restriction of an admissible set of materials in %J Doklady Akademii Nauk %D 1996 %P 329-331 %V 349 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1996_349_3_a11/ %G ru %F DAN_1996_349_3_a11